About Us

Our Services

Semi-Private Coaching

You love a group setting that's going to motivate and challenge you? Semi-private is for you.

GET STRONG, LIVE LONGER

About Us

Why Choose CozmoSize?

With over 16 year's experience in the fitness industry, Matthew Jerome Cather has trained many people across a wide spectrum of fitness levels, all with the fundamental goal of optimizing human performance, athletic development, and real-world strength through functional movement.

Having played football in high school through college, Matthew understands athletics from a competitive and recreational standpoint and applies scientific principles and progressive training methods to his programs, producing real results in his clientele.

About Us

Education & Certification

His education is extensive: he trained and interned with Master Strength and Conditioning Coach Robert dos Remedios, earned a kinesiology degree from College of the Canyons and California State University Northridge, he also is a Certified Strength and Conditioning Specialist through the National Strength and Conditioning Association. Also, he holds four specialized credentials from the world-class National Sports Performance Association as a Certified Speed and Agility Coach, Certified Weightlifting Performance Coach, Certified Sports Nutrition Coach and Certified Program Design Specialist.

Matthew is also recognized as an exclusive NSPA Master Sports Performance Coach where he finished top of the class in a live hands on coaching test and valuation in front of some of the highest respected coaches in the industry.

Let the world discover the healthier you and start training with our team today.

Make sure to book your free consultation so we can learn about your fitness goals and give you a glimpse of what CozmoSize Fitness is about.

Our Services

Contact Us

24727 Railroad Ave. Newhall, CA

661-990-9820

We Work for You

M-F 6 AM to 7 PM

© 2025 CozmoSize Fitness - All Rights Reserved.